/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with the License. You may obtain
 * a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 *
 * =================================================================================================
 *
 * This software consists of voluntary contributions made by many individuals on behalf of the
 * Apache Software Foundation. For more information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * +------------------------------------------------------------------------------------------------+
 * | License: http://www.apache.org/licenses/LICENSE-2.0.txt 										|
 * | Author: Yong.Teng <webmaster@buession.com> 													|
 * | Copyright @ 2013-2017 Buession.com Inc.														|
 * +------------------------------------------------------------------------------------------------+
 */
package org.apache.ibatis.type;

import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

/**
 * @author Yong.Teng
 */
public abstract class AbstractEnumSetTypeHandler<E extends Enum<E>> extends AbstractSetTypeHandler<E> {

    public AbstractEnumSetTypeHandler(Class<E> type){
        super(type);
    }

    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, Set<E> parameter, JdbcType jdbcType) throws
            SQLException{
        final StringBuffer sb = new StringBuffer();
        int j = 0;

        for(Enum e : parameter){
            if(j > 0){
                sb.append(',');
            }

            sb.append(e);
            j++;
        }

        ps.setString(i, sb.toString());
    }

    protected abstract E getValue(String str);

    @Override
    protected HashSet<E> parseResult(final String str){
        if(str == null){
            return null;
        }

        HashSet<E> data = new HashSet<>();
        String[] temp = str.split(",");

        for(String s : temp){
            data.add(getValue(s));
        }

        return data;
    }

}
